a granular mineral substance consisting typically of corundum mixed with magnetite or hematite, used powdered, crushed, or consolidated for grinding and polishing.
Origin: 1475–85; < MF emeri, OF esmeril < VL *smēriculum, equiv. to MGk smêri (for Gk smýris rubbing powder; akin to smear) + L -culum-cule2
Main Entry: em·ery Pronunciation: 'em-(&-)rE Function: noun Inflected Form: pluralem·er·ies often attributive: a dark granular mineral that consists essentially of corundum and is used for grinding and polishing; also: a hard abrasive powder